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Search Again :: Adv Search 1000 results in 0.025s
<1234567…34>
  • Wheels of Fire: Chase HQ = duff masteringAndy Barker mentioned Chase HQ in the Wheels of Fire compilation as being WIP way back in April 2005... http://www.worldofspectrum.org/forums/discus…

    Andy Barker mentioned Chase HQ in the Wheels ... been trying to TZX my copy (prior to selling it ... result each time. Every block converted perfectly and had ... />
    The faulty block is the penultimate one. It ... repeat of the previous block (6896 bytes long) ...
    richl richl July 2016 MIA/STP/SDP
  • Push/Pop data copyingWe all know that stack pointer cheese and push/pop is faster to move data than LDIR - which in turn is slower than unrolled LDI's anyway. I rewrote …

    ... that stack pointer cheese and push/pop is faster to move data ... mojon's fourspriter to use push/pop, but copying a four character ... screen takes three cycles of push/pop.

    What's the ... as part of the third block, which is an advantage - I ...
    Gedlion Gedlion March 2011 Development
  • Chase HQ - How did they do it?How did the programmers of Chase HQ do what they did with that game on the Spectrum? Let's face it, the speccy was pretty tired by the time that gam…

    How did the programmers of Chase HQ do what they did with ...
    Mark Wills Mark Wills September 2006 Games
  • Original boxed Chase HQ release desiredI'm after a boxed original Chase HQ, complete with box that hasn't been scraped too much. Doesn't matter if the tape works as it's for display purpos…

    ... 'm after a boxed original Chase HQ, complete with box that hasn ...
    NickH NickH December 2006 Wanted
  • Chase HQ II (missing artist ???)[URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0000906"]Chase HQ II[/URL] In the lower right corner there is what appears to be PG or FG or …

    ... .org/infoseekid.cgi?id=0000906"]Chase HQ II[/URL]

    In ...
    ZnorXman ZnorXman October 2009 Infoseek database
  • Chase HQ Pseudo 3d road algorithm ?Hello, I'm new to that forum and to the spectrum. I'm developping games for Colecovision (may be you hear about : Ghost'n Zombie and Smurf challe…

    ... particular i have discovered the Chase HQ port , and i have been ... the exact algorithm used in Chase HQ speccy's port.

    chase hq in a format i can ... dissambled file (re-assemblable)of chase HQ?

    Or better , if ...
    youki youki February 2011 Development
  • Game of '90 and Emlyn Hughes and Chase HQHi all I finally worked out how to play Emlyn Hughes and, whilst I can see the appeal, remain a Match Day 2 fan! Chase HQ is very impressive too, m…

    ... a Match Day 2 fan! Chase HQ is very impressive too, mind ...
    mickmog mickmog January 2013 Games
  • Push 'n' ChaseIt is my great pleasure and honor to announce the release of PUSH 'n' CHASE a game made with CGD featuring a wonderful loading and intro screen …

    ... the release of

    PUSH 'n' CHASE

    a game ... crates to reveal the traps. Chase the baddies with the traps ... become dangerous mines. Baddies can push the mines all over the ... crates into mines, You can push the crates against obstacles to ...
    gabriele amore gabriele amore September 2013 Brand new software
  • Developing "Push n Chase" into a good gameI was wondering if anyone would like to help developing my CGD "Push n Chase" into a good game. [url]https://www.youtube.com/watch?v=cdZ5XYbterc[/u…

    ... to help developing my CGD "Push n Chase" into a good game ... become traps which you can push to kill your enemies. If ... to buy the crates (you push money bags against special blocks ... ). Sometimes you are supposed to push blocks to clear the way ...
    gabriele amore gabriele amore August 2014 New game ideas
  • Chase HQ and Out Run Europa - same graphics?This just popped up on twitter, posted by Bill Harbison (Ocean graphic artist) https://pbs.twimg.com/media/Cn0G7D8WgAAI291.jpg Is this true? US…

    ... ? US Gold recycled Harbison's Chase HQ graphics for Out Run Europa ...
    leespoons leespoons July 2016 Games
  • T.I.M. - A New Interlace - Demo for DOWNLOADHere's something that's been in the works for quite a while ( mostly in my head ) and recently I've aquired assistance to help it come to fruition. …

    hey, people, CHASE HQ has pretty fast stack based copy routine:

    LD SP ... /> POP IY
    LD SP, HL; THE SECOND ONE :)
    PUSH IY ...
    PUSH IX
    PUSH BC
    PUSH DE
    PUSH AF ...
    Fikee Fikee May 2004 Development
  • help sought with first foray into machine code - pixel scrolldownI have started to code my first machine code program, a simple roadrace game. I've based it around the pixel scrolldown routine in 40 Best Machine Co…

    ... = destination address for pixel row copy
    ld h,d ; now ... so we can see how fast it is. If this isn ... pixel, or moving to a push/pop solution.

    BTW, everything ... ..7) character row within a block
    CCCCC = (0..31) character ...
    Alcoholics Anonymous Alcoholics Anonymous February 2008 Development
  • help sought with first foray into machine code - pixel scrolldownI have started to code my first machine code program, a simple roadrace game. I've based it around the pixel scrolldown routine in 40 Best Machine Co…

    ... to a list of how fast the instructions in mc are ... each in comparison to regular push/pop). The "ld sp,hl; ld ... the row in the next copy operation.

    The ... /> push de
    push bc
    push af

    ; repeat this could block ...
    Alcoholics Anonymous Alcoholics Anonymous February 2008 Development
  • help sought with first foray into machine code - pixel scrolldownI have started to code my first machine code program, a simple roadrace game. I've based it around the pixel scrolldown routine in 40 Best Machine Co…

    ... do copy operations in pixel row order easily. push ix/pop ix ... 21 for regular push/pop and will decrease the copy speed from 12 ... program to generate this code block! Or perhaps this is created ... things go as fast as possible (or acceptably fast) and things ...
    Alcoholics Anonymous Alcoholics Anonymous February 2008 Development
  • Fast screen writesI wondered what the faster than LDIR methods of writing to the screen were.

    ... stored in this sequence
    push hl
    ...

    PUSH/POP in theory 10.5 T ... byte (CHASE H.Q. has some kind of really fast copy routine, ... /> LD HL, xx / PUSH HL 10.5 T/byte ... it was example of very fast push/pop copy routine. he uses it ...
    Fikee Fikee October 2008 Development
  • Wheels of Fire: Chase HQ = duff masteringAndy Barker mentioned Chase HQ in the Wheels of Fire compilation as being WIP way back in April 2005... http://www.worldofspectrum.org/forums/discus…

    ... due to the bad block). Fast loading usually seems to ... scoreboard etc but then the Chase HQ logo never appears and ... one block it was identical to my original Ocean copy. I ... just swap the duff block for one from the ... else has got a copy and can confirm that ...
    richl richl July 2016 MIA/STP/SDP
  • Running out of fingers in AssemblyDear all, Still trying to learn Assembly and have put a few routines together. However, as my routines become a little more involved I find myself…

    ... note of special architectural features (block copy, block io, separation of io and ... nc, error_einval_zc

    push de
    pop ix

    ; use ... the division first making it fast without register restriction. That's ...
    Alcoholics Anonymous Alcoholics Anonymous September 2016 Development
  • Trouble with rainbow effect push/popI'm having a bit of bother getting my rainbow graphics to behave themselves. Basically I want a rainbow effect to last for say 4 seconds before movi…

    ... problem is if I omit push and pop bc the thing goes ... )
    ;push bc
    call flash
    call flash2
    ;pop bc ...
    daveysludge daveysludge June 2013 Development
  • [Asm] Is this nested loop faster than LDIR or a bunch of unrolled LDI's?Hi all. I'm learning Z80 asm on Speccy 48K, and to start with I decided to write my own "CLS" routine (without relying on ROM calls or LDIR) as a lea…

    ... interests me most is efficient fast code, so after weeks of ... the stack pointer and using push/pop to copy memory fully unrolled with ...
    ST1 ST1 November 2018 Development
  • T.I.M. - A New Interlace - Demo for DOWNLOADHere's something that's been in the works for quite a while ( mostly in my head ) and recently I've aquired assistance to help it come to fruition. …

    hm, not a copy routine from CHASE H.Q.
    this one ... /> pop bc ;38

    ld sp, hl ;6

    push ... /> pop bc ;38

    ld sp, hl ;6

    push ...
    Fikee Fikee May 2005 Development
  • The Only Reason Sinclair Succeeded (Provoking Controversy)Although I love my Sinclairs dearly, I think that the only reason they succeeded was because at the time most people did not know any better (factori…

    ... s implementation has an unnecessary push/pop in there which really ... hw support) is a fast byte copy (for copying a back ... the main display) and a fast write/clear (for zeroing ... to do the byte copy at a speed of ... (not the same as a copy, more limited) at about ...
    Alcoholics Anonymous Alcoholics Anonymous September 2006 Sinclair Miscellaneous
  • How do I clear only a specific area of a screen (quickly) in machine code ?I'm looking for a machine code routine which will clear the first 20 rows of the Spectrum's display (or any number of rows or columns) . I have found…

    ...
    oneLineLoop
    PUSH BC ; Remember counter
    ... get HL back by PUSH/POP and then INC ... different from the ROM COPY routine - not sure ... we're in the same block

    ... to move to the next block.

    ...
    hldswrth hldswrth July 2007 Development
  • help sought with first foray into machine code - pixel scrolldownI have started to code my first machine code program, a simple roadrace game. I've based it around the pixel scrolldown routine in 40 Best Machine Co…

    ... running outside the di/ei block and it needs to have ... the push/pop block should be:

    [code]
    ;end of copy block
    Alcoholics Anonymous Alcoholics Anonymous March 2008 Development
  • A scrolling starfield - help needed!I have been messing on my speccy again recently and tried to do a scrolling (parallax - maybe) starfield. I know how to scroll using machine code but…

    ... less than current location
    push bc
    call GetLineAddrOne ;source ...
    pop bc
    jr LineScrolledUp

    ScrollUpLastLineInScreen
    push bc ... 64, therefore not first in block
    ;copy line from location "(7 ...
    Digital Prawn Digital Prawn December 2008 Development
  • Character scrollingOk, first I'd like to say that I'm not looking for a complete routine (but that might help) because I am hoping to write it myself and learn a bit mo…

    ... fast. It's self modifying code, doesn't use PUSH/POP copy, ... )
    inc hl
    push de
    djnz FillScrLinesRev
    ScrollDownLoop: ;copy a single char line
    push bc
    ld ... br /> inc d
    pop bc
    djnz ScrollDownLoop < ...
    0sAND1s 0sAND1s February 2010 Development
  • Please test my Manic Miner remake!Thanks to everyone who downloaded my sneak preview of Manic Miner Turbo. Thanks especially to na_th_an who is the only person so far to give feedback…

    ...
    isr: push af
    push bc
    push de
    push hl ; save ... *24 ; byte count
    ldir ; block copy

    ; set the attributes ... )

    pop hl
    pop de
    pop bc
    pop af ; restore ...
    Paradigm Shifter Paradigm Shifter February 2010 Games
  • Using the stack to copy memory blocksA [b]PUSH[/b] and a [b]POP[/b] instruction together take less time than two [b]LDI[/b], so long [b]POP/PUSH[/b] sequences are sometimes used to copy …

    ... on the [b]push[/b] and [b]pop[/b], but have ... m asking about optimising a push/pop byte copier that uses ... push/pop copy used for multicolor or my description of push/pop copier from CHASE ... />
    when speaking about PUSH/POP copy don't forgot contetion (and ...
    Fikee Fikee August 2010 Development
  • Calculating the address of a pixel?Hi Folks, Is there an easy/quick way of calculating the memory address of a pixel? So for example, if I wanted to "plot" pixel at screen coordinate…

    ... something like:
    [code]
    pop hl - each tile starting address ... use any of the block copy operations or even PUSH to the display ... .[/QUOTE]
    I can use PUSH as easy as i can ...
    TVzombie TVzombie February 2011 Sinclair Basic
  • Your Views on... GhostbustersI dusted off the Master System version of this and inspired me to try out the Speccy version. It's a good game with it's strong and weak points. I …

    ... does a big LDIR to copy it to the screen. Unfortunately ... up by using LDI or PUSH/POP. To fit in the small ... /> DJNZ DONE2
    JP $8300 ;fast loader jumps to $8300 to ...
    Jimmy Jimmy May 2011 Games
<1234567…34>

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